Heavily modified? The Meth kit (which is probably hurting power btw) is the only mod I would even consider to be in that category. Full exhaust system, air filters , wastegate actuators, intercooler pipes and couplings, BOV and a reflashed ecu? Running 10.80's in a 4000 pound car?
With over 100 launches on the car already and now cutting a 1.51 60 foot time this tranny may allow John to run 9's next year with a BPU++++: bolt on turbo kit and an intercooler upgrade.